I think you are missing the point. We can have Ukrania for the taking. We will then install a Christian government and liberate their oil and gas from the grip of the Bear and then position our missiles next to the USSR.
The whole problem is easily solved: see map below.
We strike on the USSR /Ukrania border preventing the exit of the Russians from Crimea and simultaneously preventing the Russians from sending any support to those now trapped.
At the same time, troops are flown into the south, northwest and southwest from whatever countries are there. The troops meet up with the Ukranistan army and march eastwards to wipe out the remaining Soviets.
Oh yes, we bomb Moscow to give them something to think about and generally distract them.